The following video demonstrates each syllable of the pinyin structure
and the exercise of pinyin/zhuyin with basic Chinese 4-tune pronunciation

Mandarin pinyin tunes
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cuō, cuó, cuǒ, cuò

first tune

cuō

rub with hands 搓 cuō

Chinese characters also pronunced cuō

fourth tune

cuò

mistake; fault; wrong 錯 cuò

house 厝 cuò

frustrate; fail 挫 cuò

Chinese characters also pronunced cuò